Hello community! I am trying to integrate slack notifications into my workflow. Is there a good way to post to Slack if all tasks are successful? Here is my state_handler:

def post_to_slack(task, old_state, new_state):
    # <https://github.com/PrefectHQ/prefect/blob/d61fa6aac9330c5817cc8e8b8f8cca2d634ea7e1/src/prefect/engine/state.py>
    if new_state.is_retrying():
        msg = f"<@XXXX> {os.path.basename(__file__)} | {task} | {new_state}"
        <http://requests.post|requests.post>("<https://hooks.slack.com/services/>", json={"text": msg})

    if new_state.is_failed():
        msg = f"<@XXXX> {os.path.basename(__file__)} | {task} | {new_state}"
        <http://requests.post|requests.post>("<https://hooks.slack.com/services/>", json={"text": msg})

    # if new_state.is_successful():
    #     msg = f"<@XXXX> {os.path.basename(__file__)} | {task} | {new_state}"
    #     <http://requests.post|requests.post>("<https://hooks.slack.com/services/>", json={"text": msg})

    return new_state

I would like to avoid sending a success message for each task, and instead send one only if every task ran successfully. Thanks!

If you use cloud, there is an inbuilt "automations" in the UI so you don't have to write any code. It's awesome ☺️

I'm just using core at the moment, cloud would be great.

Hey @Thomas Nakamoto, I assume you have tasks that can Fail without the flow Failing, so you want a notification only if everything succeeds? Or do you just want a way to know if the Flow succeeds?

Hi @Kevin Kho just a way to know the Flow succeeded. I have a workflow that will run hourly and I would like a confirmation that it ran.

Oh. You should just use the SlackTask or Slack Notifier at the end on your Flow. The SlackTask is more configurable as I think the Slack Notifier requires you store the Secret on Prefect Cloud

@Kevin Kho thank you I will try out the SlackTask